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Technology Stocks : C-Cube -- Ignore unavailable to you. Want to Upgrade?

To: ggscott who wrote (35864)	9/11/1998 4:22:00 PM
From: DiViT	Read Replies (1) \| Respond to of 50808

We've never been able to prove or disprove a connection between the two.

To: ggscott who wrote (35864)	9/11/1998 4:30:00 PM
From: BillyG	Respond to of 50808

DVD audio spec........... eet.com DVD-Audio spec unveiled By Yoshiko Hara TOKYO - After prolonged discussions, the DVD Forum has finally nailed down the DVD-Audio format and unveiled the Version 1.0 specifications. The DVD Forum will demonstrate the format at the DVD conference Oct. 1 and 2 in San Francisco. The audio format makes it possible to store more than 74 minutes of sound in two channels using the highest sampling frequency - 192 kHz - with 24-bit quantization, or six channels at a 92-kHz sampling frequency with 24-bit quantization. That's better than twice the performance of the CD audio specifications. However, any systems that are built on the ready-to-go DVD-Audio spec will have to compete in the market with Super Audio CD, an incompatible extension to CD audio promulgated by Philips and Sony. Key to the DVD-Audio format's audio recording scheme is lossless-compression technology that was added to the specification after the release of version 0.9 last June. That version was distributed among proponents but not to the public. The lossless technology makes use of idle bandwidth to store peak signals that surpass a certain level to restore the original data perfectly without the drop of any signal. The specifications pair the lossless-compression scheme with a pulse-code-modulated linear audio signal. The format supports all DVD formats, from 12-cm diameter 4.7-Gbyte single-sided disks to 17-Gbyte dual-layer double-sided 8-cm units. Sampling frequencies supported are 44.1, 88.2, 176.4, 48, 96 and 192 kHz. Quantization is at 16, 20 and 24 bits. Thus, dynamic range is 144 dB and frequency response is up to 96,000 Hz. The maximum transfer rate is 9.6 Mbits/second. Content creators can choose any combination suitable for their application. The DVD-Audio format was originally intended to be finalized in spring 1996, but company infighting stretched that time line. Also, the working group grew to include 39 companies, and reaching consensus among such a large number of members also delayed finalization.